For 2016 Croozer Kid models and newer, the Click & Flash Sensor Light is a great way to improve visibility in the dark. The light is extremely easy to mount onto the handlebar of the trailer. The lights turn on automatically when it starts to get dark. They also shut off automatically after a four-minute delay. If you want the light to remain on, you can change the settings. The integrated lithium-ion rechargeable battery can last for up to 15 hours. The rechargeable battery can be charged using the USB cable, which is included. What's more, the battery has a lifespan of up to 1000 recharge cycles, so you can take it on several tours to come. There is a charge level indicator as well. The Croozer Sensor Light is the perfect addition to your Croozer Kid models made in or after 2016 - Safety and comfort combined!